Write an equation to represent the number of rods, N, in an L length truss

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2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.